Drag-sawing machine



A. WILKI-NE. Drag-Sawing Machine.

No. 228,237. Patented June 1,1880;

JFEIERS, PN OTOJ rrucGRAPnER, wASmNsTON D c UNTTED STATES PATENT Trice.

ASA WILKINS, OF CINCINNATI, OHIO.

DRAG-SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 228,237, dated June 1,1880.

Application filed October 3, 1879.

To all whom it may concern:

Be it known that I, AsA WILKINS, of Oincinnati, in the county ofHamilton and State of Ohio, have invented a new and Improved Grosscut orDrag Sawing Machine; and I do hereby declare the following to be a full,clear, concise, and exact description of the same, sufficient to enablethose skilled in the art to make and use the same, reference being hadto the accompanying drawings, forming part of this specification,wherein Figure 1 is a top view of my improved machine. Fig. 2 is a sideelevation, and Fig. 3 is a front elevation, of the same.

Similar letters of reference in the accompanying drawings denote thesame parts.

My invention relates to that class of machines for sawing wood, logs,timber, 850., commonly known as drag-saws, and it has for its object tocut down standing trees as well as to saw them up into logs after theyare cut down.

To this end the invention consists in the mechanism adapted to operatethe saw for cutting down a standing tree and for sawing it into lengthsafter it has fallen, as I will now proceed to describe.

In the accompanying drawings, A represents the frame of mysawing-machine, composed of wood or metal. If the latter material isem-, ployed in its construction, I prefer it in the form of gas-pipe, ascombining cheapness with requisite lightness and strength.

The frame is constructed of two side pieces, B B, supported at the endsby uprights G G, and of two sill-pieces, D D, also joined to the uprightsupports, the whole being suitably braced and'stiffened laterally. Therear uprights extend above the side pieces, and are connected togetherat their upper ends to form a frame, to which the operators seat E isattached, such seat being braced from the lower part of the frame by theleg F, and projecting to the rear, so as to occupy a position betweenthe treadles and hand-lever.

The front end of the frame between the uprights is provided with twoparallel vertical pieces, G G, between which the saw is guided whencutting a fallen tree into lengths, and it is also provided with twowings, H H, one on each side, to support a slotted top guide, I,

crossshaft in the frame.

The segmental gear or its shaft carries the handlever L, which projectsrearward, so as to be grasped by the operator on the seat E,

and the end of the shaft forms cranks con nected by rods M with thetreadles N, pivoted to side bars, 0, of the frame, and projectingrearward beneath the seat to receive the feet of the operator.

The shaft of the gear J carries a right arm, P, for connecting with apitman, Q, for operating the saw in either of the positions above named.

For cutting down a standing tree the pitman is jointed to a cross-head,It, arranged upon ways S S, attached to the proximate sides of theframe-pieces B B, and the crosshead carries the saw upon it by means ofa clevis and pin, T. The rear end of the saw, of course, rests flatwiseupon the clevis, and is held by the pin 5 but its front end is supportedby a block or carriage, U, mounted upon the guide I, and provided uponits under side with a long tenon or strip to enter the groove in saidguide,

and thereby form means for properly directing the carriage in itsmovements.

The back of the saw rests againsta grooved pulley, V, mounted upon thecarriage, to reduce the friction upon the saw during its reciprocations,and the carriage is connected to a weight, W, by means of a cord, X,passing over grooved pulley Y, joined in the front of the frame and inan upright, Z, thereof, as shown in Fig. 3.

To operate the saw against a standing tree the carriage is first pushedoutward to the limit of the slot opposite the upright Z, and thenreleased, so that the weight shall pull the saw on the carriage againstthe side of the tree. The operator seated upon the seat then alternatelymoves the hand lever and treadles, thereby imparting an oscillatingmotion to the gearing, which, in its turn, vibrates the rigid arm P toreciprocate the pitman, cross-head,

and saw. As the saw operates it is fed into formed by the verticalstrips G G at the front of the frame. The pitman is then detached fromthe cross-head and pivoted to a short arm,

C, projecting rearward from the pendent bar A. After the saw thusarranged has been placed upon the log the mechanism is operated toreciprocate it as above described, the pendent bar A vibrating freely tohold up and guide the rear end of the saw.

If desired, two saws may be operated at the same time, one to cut downthe tree and the other to saw logs upon the ground; but in this case thesaws must be separately connected to the rigid arm 1?.

A brace, D, may be employed to connect the side pieces, B, of the framebetween the gears and ways for the cross-head, for the purpose ofstrengthening or stifi'ening the frame when the saw is at work; and thisbrace may be pivoted at one end and arranged to catch over a pin at theopposite end, so as to be swung out of the way or swung across andlocked to the side pieces when desired.

Having thus described my invention, what I claim is 1. The frame A,provided with the crosshead for operating the saw in a horizontalposition, and the pivoted vertical bar A, for operating the saw to cut afallen log, the bar and cross-head being capable of connection to thedriving mechanism, substantially as described.

2. The horizontally-moving weighted carriage U, provided with theguide-pulley V for the saw, in combination with the slotted guide I,substantially as described,for the purpose specified.

3. The combination of the gearing J K, operated by the hand-lever andtreadles, with the pitman and cross-head for reciprocating the saw tocut a standing tree, substantially as described.

ASA WILKINS.

Witnesses J. R. P. BROWN, CYRUs BEEBE.

